A restaurant uses a computer to identify their 400 most loyal customers from its database and then surveys those customers to find out how they like their service. Identify the population and determine whether the sample is random or biased.

The sample is Biased

Step-by-step explanation:

When a survey is being taken, bias is when results are manipulated to intentionally or unintentionally get certain results. This survey is biased because the restaurant is only surveying loyal customers, who all most likely like the restaurant

A way to make the survey random would be by asking multiple different customers that aren't loyal or regular.

you need to show us the graph.

step-by-step explanation:

sample answer: you can determine whether each element of the domain is paired with exactly one element of the range. for example, if given a graph, you could use the vertical line test; if a vertical line intersects the graph more than once, then the relation that the graph represents is not a function.